diff --git a/build/autoconf/lustre-build.m4 b/build/autoconf/lustre-build.m4
index 4a95cd93ab76a5af58ce6e03e160c0b8ed5f53d3..e0ed33b340fb0e417514705d7715730156d677c2 100644
--- a/build/autoconf/lustre-build.m4
+++ b/build/autoconf/lustre-build.m4
@@ -691,9 +691,8 @@ LB_CONFIG_UTILS
 LB_CONFIG_TESTS
 LC_CONFIG_CLIENT_SERVER
 
-# three macros for cmd3 
+# two macros for cmd3 
 LC_CONFIG_SPLIT
-LC_CONFIG_LDISKFS
 LN_CONFIG_CDEBUG
 
 LB_CONFIG_MODULES